2 Kings 9:6-7

Jehu got up and went into the house. Then the prophet poured the oil on Jehu’s head and declared, “This is what the LORD, the God of Israel, says: ‘I anoint you king over the LORD’s people Israel. You are to destroy the house of Ahab your master, and I will avenge the blood of my servants the prophets and the blood of all the LORD’s servants shed by Jezebel.